Glass melting furnace

The present invention concerns a glass melting furnace for processing radioactive liquid wastes discharged from nuclear facilities, and provides a furnace in which an accumulation layer of a glass material is not formed on the surface of a liquid glass. Namely, the melting furnace main body has a storing space capable of storing liquid glass. A starting material supply port is disposed to the upper portion of the melting furnace main body passing from the outside of the main body to the storing space, which can pass the glass material. A liquid waste supply port is disposed to the upper portion of the melting furnace main body passing from the outside of the main body to the storing space. Since the starting material supply port and the liquid waste supply port are disposed separately, each of the materials is supplied alone to a predetermined portion of the inside of the storing space. An accumulation layer of the glass material is not formed on the surface of the liquid glass. Accordingly, the liquefying progress of the glass material is not hindered. As a result, the operation efficiency of the plant can be improved. (I.S.)